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https://www.ias.ac.in/article/fulltext/pram/058/05-06/0913-0917

(RE)Ni₂B₂C; YNi₂B₂C; vortex lattice; non-locality

We have performed extensive small-angle neutron scattering (SANS) diffraction studies of the vortex lattice in single crystal YNi₂B₂C for B‖c. High-resolution SANS, combined with a field-oscillation vortex lattice preparation technique, allows us to separate Bragg scattered intensities from two orthogonal domains and accurately determine the unit cell angle, β. The data suggest that upon increasing field there is a finite transition width where both low- and high-field distorted hexagonal vortex lattice phases, mutually rotated by 45°, coexist. The smooth variation of diffracted intensity from each phase through the transition corresponds to a redistribution of populations between the two types of domains.

SJ Levett^{1 2} CD Dewhurst² DMcK Paul¹

1. Department of Physics, University of Warwick, Coventry - CV4 7AL, UK
2. Institut Laue Langevin, BP156-38042, Grenoble, France

Published

6 May 2002